/*
 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
 * Rights Reserved. This program is distributed under the W3C's Software
 * Intellectual Property License. This program is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.
 * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
 */

namespace org.w3c.dom
{

    /**
     * The <code>NodeList</code> interface provides the abstraction of an ordered 
     * collection of nodes, without defining or constraining how this collection 
     * is implemented. <code>NodeList</code> objects in the DOM are live.
     * <p>The items in the <code>NodeList</code> are accessible via an integral 
     * index, starting from 0.
     * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>.
     */
    public interface NodeList
    {
        /**
         * Returns the <code>index</code>th item in the collection. If 
         * <code>index</code> is greater than or equal to the number of nodes in 
         * the list, this returns <code>null</code>.
         * @param indexIndex into the collection.
         * @return The node at the <code>index</code>th position in the 
         *   <code>NodeList</code>, or <code>null</code> if that is not a valid 
         *   index.
         */
        Node item(int index);

        /**
         * The number of nodes in the list. The range of valid child node indices 
         * is 0 to <code>length-1</code> inclusive. 
         */
        int getLength();

    }
}